HYDRO25723

• Permit No: C1982057
• IBM Index Class Name: Hydrology
• Doc Date: 4/27/1999
• Doc Name: QUARTERLY SEDIMENTATION POND INSPECTIONS SENECA II-W MINE
• From: SENECA COAL CO
• To: DMG
• Permit Index Doc Type: SEDIMENT POND INSPECTIONS
• Media Type: D
• Archive: No

PERIODIC INBPECTION PORN
Watsr, eedimsat, or Blurry Inpouadmenta
INSPECTOR'S NAME: Michael Altavilla DATE: 03/30/99
NPDES I.D. NO.: CO-0000221 ^_P. 006
FACILITY CONFIGURATION: Croee-Valley Pond DATE LAST INSPECTION: ~tt/98
SITE NAME: Pond 1006/P a-ce ting Raein LOCATION: NWtc NWtr Sec. 22 TcN R88W
MINE NAME: _saneca ii-W Mine (can a -oat of LOCATION: 8 mi_ S of Hayden. CO
MINE I.D. NO.: CMi.txn erm't No_ -8 -OC7 OWNER'S REP.: Brad Brown, can Mar
1.
2.
3.
4.
5.
6.
Foundation preparation (removal of vegetation, etumpe, topsoil:
Lift thickness:
From underdrain pipes:
At isolated points on embankment elopes:
At natural hillside:
Over widespread areas:
From downstream foundation area:
"Boils" beneath stream or ponded water:
Compaction according to approved plan:
Burning (specify extent and location):
Angle of elope: 3:1 upstream, 3:1 downstream
*Seepage (specify location, color, and approximate volume)
7. Cracks or ecarpe on crest:
8. Cracks or ecarpe on elope:
9. Sloughing or bulging on elope:
10. *Major erosion problems:
11. Surface movements in valley bottom or on hillside:
12. *Eroeion of toe:
13. *Water impounded against toe:
14. Existing embankment freeboard: Approximately
15. Increase Decrease in water level: No change
16.
17.
18.
19
20
Cracks, bulging, or erosion on upstream face:
Visible sumps or sinkholes in slurry surface:
*Clogging
Spillway channels and pipes:
Decant system:
Diversion ditches:
No
12 in
No
Yee No
Total = 6.1
Yes No
Yes
Yee
Yee o
Yee
Yee ,,,®
Yes
Yee o
Yee
Yee t~O
Yee
Yee
Yee ©O
e.s feet
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
*Cracking or crushing of pipes
Spillway pipes:
Decant system:
Trash racks clear and in place:
feet
Yee N® N/A
Yee No
Yee ® N/A
Yee No
Yee ~ N/A
Yee ~ N/A
Yee No
Yee No N®
*Major adverse changes in these items could cause instability and should be reported to the
Engineering Manager and Mine Superintendent for further evaluation. Adverse conditions noted
in these items should normally be described (extent, location, volume, etc.) in the apace on
the back of this sheet.